import cv2
import numpy as np
import pickle
#读摄像头采集的视频并保存图像

cap = cv2.VideoCapture(0)
index=0

while True:
    ret, frame = cap.read ()
# Our operations on the frame come here
    gray = cv2. cvtColor (frame, cv2. COLOR_BGR2GRAY)
# Display the resulting frame
    cv2. imshow('frame',gray)
    if cv2. waitKey(1) & 0xFF == ord('p'):
        cv2. imwrite("kk.jpg", frame)
        index = index + 1
    if cv2.waitKey(1) & 0xFF == ord('q'):
        break
# When everything done, release the capture
cap.release()
cv2.destroyAllWindows ()